忽略hybris commonI18NService round貨幣方法

Question

嘗試使用Alias覆蓋spring bean。

我想通過騎roundCurrency的commonI18NService

開箱即用的定義

<alias alias="commonI18NService" name="defaultCommonI18NService"/> 
<bean id="defaultCommonI18NService" class="de.hybris.platform.servicelayer.i18n.impl.DefaultCommonI18NService" parent="abstractBusinessService"> 
    <property name="languageDao" ref="languageDao"/> 
    <property name="currencyDao" ref="currencyDao"/> 
    <property name="countryDao" ref="countryDao"/> 
    <property name="regionDao" ref="regionDao"/> 
    <property name="conversionStrategy" ref="conversionStrategy"/> 
</bean> 

我們的自定義代碼的方法： -

public class DefaultCustomCommonI18NService extends DefaultCommonI18NService 
{ 

    @Override 
    public double roundCurrency(double value, int digits) 
    { 
     // custom logic 
     return value; 
    } 
} 

注入自定義豆： -

<alias alias="commonI18NService" name="defaultCustomCommonI18NService"/> 
<bean id="defaultCustomCommonI18NService" class="com.extended.service.impl.DefaultCustomCommonI18NService" parent="defaultCommonI18NService"/> 

但它在服務器啓動時拋出異常

INFO [localhost-startStop-1] [HybrisContextFactory] Loading <<application>> spring config <master> from extension (saporderexchangeb2b) located in (saporderexchangeb2b-spring.xml) took: (121.4 ms) 
WARN [localhost-startStop-1] [CloseAwareApplicationContext] Exception encountered during context initialization - cancelling refresh attempt 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'listMergeBeanPostProcessor': Invocation of init method failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'commercePlaceOrderMethodHooksListMergeDirective' defined in class path resource [b2bapprovalprocess-spring.xml]: Cannot resolve reference to bean 'b2bApprovalBusinessProcessCreationPlaceOrderMethodHook' while setting bean property 'add'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'b2bApprovalBusinessProcessCreationPlaceOrderMethodHook' defined in class path resource [b2bapprovalprocess-spring.xml]: Cannot resolve reference to bean 'defaultB2BCreateOrderFromCartStrategy' while setting bean property 'businessProcessCreationStrategy'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultB2BCreateOrderFromCartStrategy' defined in class path resource [b2bapprovalprocess-spring.xml]: Cannot resolve reference to bean 'cloneAbstractOrderStrategy' while setting bean property 'cloneAbstractOrderStrategy'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultCloneAbstractOrderStrategy' defined in class path resource [order-spring.xml]: Cannot resolve reference to bean 'typeService' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultTypeService' defined in class path resource [servicelayer-spring.xml]: Cannot resolve reference to bean 'converterRegistry' while setting bean property 'converterRegistry'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'defaultConverterRegistry' defined in class path resource [servicelayer-spring.xml]: Unsatisfied dependency expressed through bean property 'commonI18NService': : No qualifying bean of type [de.hybris.platform.servicelayer.i18n.CommonI18NService] is defined: expected single matching bean but found 2: defaultCommonI18NService,defaultcustomCommonI18NService; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [de.hybris.platform.servicelayer.i18n.CommonI18NService] is defined: expected single matching bean but found 2: defaultCommonI18NService,defaultcustomCommonI18NService 
     at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:136) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1566) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE] 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.7.RELEASE.jar:4.1.7.RELEASE] 

Answer 1

發生這種情況，因爲defaultConverterRegistry的自動裝配策略是byType：

<bean id="defaultConverterRegistry" ... autowire="byType" > 

這意味着春發現兩名候選人commonI18NService豆defaultCommonI18NService和defaultcustomCommonI18NService因此不知道要注入哪一個。

我建議，讓您的defaultcustomCommonI18NService主要bean是通過使用primary="true"的自動裝配，see

<bean id="defaultCustomCommonI18NService" class="com.extended.service.impl.DefaultCustomCommonI18NService" parent="defaultCommonI18NService" primary="true" />